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Sodium benzoate

Sodium benzoate
Introduction.:
     Sodium benzoate is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid.
     Sodium benzoate is a preservative. It is bacteriostatic and fungistatic under acidic conditions. It is used most prevalently in acidic foods such as salad dressings (vinegar), carbonated drinks (carbonic acid), jams and fruit juices (citric acid), pickles (vinegar), and condiments.
 
Product Identification.:
    Product name: Sodium benzoate
    Synonyms: Benzoic acid sodium salt, Sodium salt of phenylcarboxylic acid, Sodium salt of benzenecarboxylic acid
    Molecular Formula: C7H5O2Na
    Molecular Weight: 144.11
    CASE NO: 532-32-1
    Product Grade: Food grade / Industrial grade / Pharma grade
 
Physical & Chemical Properties.:
    It is white, almost odourless, crystalline powder or granules
    Freely soluble in water, sparingly soluble in ethanol.
 
Application.:
     1.Sodium benzoate mainly used in the food industry as food preservatives, such as used in soy sauce, vinegar, salt pickles, fruit juice, jam, fruit wine, canned food, soft drinks, syrup, beverages, tobacco etc.
In the pharmaceutical industry, it used for the preparation of sedative drugs such as caffeine, and used in the pills syrup corrosion.
     2. It is also used as anti-corrosion and anti-mildew for the rust-proof paper, latex paint, shoe polish, glue, fabric.
     3. In addition, it can also be used as the mordant dye industry for dye industrial, and as the plasticizer for plastics industry, used as a as well as the spice of industrial raw materials.
     4. It can be used in chemical reagent, used as a serum bilirubin test cosolvent.
 
Packing.:
    1). Net 25 kg lined with PE plastic bag
    2). According to customers' requirement
 
Quality standard.: (see table)
The quality conforms to BP / USP / E211 / FCC / EP Standard.
Sodium benzoate index
Items
Index
Content (as dry product C7H5NaO2)
99-100.5%
Loss on drying
≤1.5% after drying at 105 °C for four hours
Melting point for benzoic acid
121.5-123.5℃
Acidity or alkalinity
≤0.25 ml/N
Arsenic
≤3 ppm
Halogenide (Fecl3)
≤0.02%
Heavy metal
≤10 ppm
Total Cl Content
≤0.06%
Lead
≤5 ppm
Mercury
≤1 ppm
Positive test of presence of benzoate and sodium
Qualified with regulations
Readily oxidizable substances
Qualified with regulations
Polycyclic acid
Pass test
Chloride
≤200 ppm
Chlorinated organic compounds
<600 ppm
Degree of acidity or alkalinity
Qualified with regulations
Dissoluble state
Pass test
Compound easy to be oxide
Pass test
Shelf life
2 years
 

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